Chaeles gulath



UNITED STATES PATENT OFFICE.,

CHARLES GULATH, OF ST. LOUIS, MISSOUR, ASSGNOR OF ONE-HALF TO J ACOB E.KRUCKER, OF SAME PLACE.

ENVELOPE.

PECIFICATION orming part of Letters Patent No. 354,080, dated December'7, 1886.

Application filed March S, 1886. Serial No.194.4(l9. (No model.)

T aZZ whont it may conccrn:

Be itvknown .that I, CHRLES GULATH, of the city of St. Louis, in theState of Missouri, have invented a certain new and useful Improvenientin Envelopes, of which the following is a full, clear, and exactdescription.1'eference being had to the accoinpanying drawings, formingpart of this specification, and in which- I Figurel shows my envelopeopened out, and looking at the inside. Figs. 2, 3, and 4 are perspectiveviews illustrating` the operation of v fo'lding the parts, and Fig. 5shows the back of the envelope when folded complete.

[5 Myinvention relates to an niprovement on, the envelope shown,descrihed, and claimed in the application for Letters Patent of theUnited States of Jacob E. Krucker, filed 18th of January, 1886, andnuxnbered 188,977.

My invention consists in features of novelty hereinafter fullydescribed, and pointed out in the clainl.

Referring to the drawings, A represents the body of the envelope, havingend tlaps, B, and side fiaps, O D. The endflaps are slit to form,

as in the application referred to, lookingtongues E. The side flap, O,is slit, as in the application referred to, to form tongues F FV, thetongue F being provided with slots G to receivethelocking-tonguesE.Thefiap D, in-

stead of being provided with the slots, as in said application, is cutout at H to form a T-head, I, connected to the flap by a neek, J.

In folding the envelope the end flaps, B, are first folded over on thebody, as shown in Fig. 2, and the tongues E turned up, as indicated. Thefiap D is next folded over, as shown in Fig. 3, the ncckJ fitting`between the tongues E. The fiap O is next folded over, the tongues Eentering the slots G, and then being bent over beneath the tongnes F',as shownin Fig. 4. `The tongues F' are next bent down, as shown in Fig.5, holding the locking-tongues.

The parts of the envelope cross-lined, as at M, are gummed, and are thuseausedto adhere 4 5 to the parts upon which they fold.

By making the T-head on the fiap D to receive the tongues E the envelopecan/he made and folded entirely by 1na('.hincry,`(with the exception ofthe tlap O, which is not folded until after the envelope is put to usa)which is not the case with the slots in the fiap E, as in saidapplication, as it Would be impracticable by machinery to insert thetongues E through the slots.

I elairn as my-inventio'n- The combination, with the end flaps, eachhaving a tongue, of the side fiaps, one ot' which is provided with aThead, whose neck receives said tongues, substantially as shown and 60described, and for the purpose set forth.

CH AS. GULATH.

In presence of- GEo. H. KNIGHT, EDW. S. KNIGHT.

